HP Cylinder is a direct replacement for 049584-1 and 72185325
Backup Seal Sleeve is a direct replacement for B-1002-2 and 100018-1
Bleed-down Valve Body is a direct replacement for 001822-1 and 100133-1
Spring-energized Rod Seal is a direct replacement for A-11275 and 40050-W-1062. This is also included in the 010641-1
Check Valve O-ring (-125) is a direct replacement for A-0275-125 and 400043-125. This is also included in the 015866-1